Electronic actuator

Abstract

The utility model relates to the technical field of electronic actuators, and provides an electronic actuator which comprises a shell, a rotating shaft, a transmission gear and a transition plate, the rotating shaft comprises a driving shaft, a transmission shaft and an output shaft, and the driving shaft, the transmission shaft and the output shaft are arranged in parallel at intervals; the transmission gears are fixedly arranged on the driving shaft, the transmission shaft and the output shaft respectively, the transmission gear on the driving shaft is meshed with the transmission gear on the transmission shaft, and the transmission gear on the transmission shaft is meshed with the transmission gear on the output shaft; and the transition plate is fixedly arranged in the shell and is rotationally connected with the driving shaft and the transmission shaft. According to the transmission gear, the transition plate is arranged and is rotationally connected with the driving shaft and the transmission shaft, so that the driving shaft and the transmission shaft can be supported, the driving shaft and the transmission shaft are prevented from being bent in the using process, and the transmission gear operates more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic actuators, in particular to an electronic actuator. Background Art

[0002] An electronic actuator is an actuator that controls an adjusting mechanism according to the output signal of an electronic controller. It can not only realize the automatic operation of the adjusting mechanism, but also ensure the adjustment accuracy of the adjusting mechanism, and plays an important role in the automotive field.

[0003] The invention patent with the publication number CN111114517A discloses an electronic brake actuator, which includes an upper housing, a lower housing, a planet carrier, a double joint gear II, an output shaft arranged on the planet carrier, a center pin arranged on the upper housing, and a first elastic body arranged between the planet carrier and the lower housing and used to apply an elastic force to the planet carrier and / or a second elastic body arranged between the upper housing and the double joint gear II and used to apply an elastic force to the double joint gear II. The electronic brake actuator eliminates or reduces the clearance between many components on the main shaft of the planetary gear by setting elastic bodies, so as to eliminate abnormal noises generated by axial impact.

[0004] In the above technical solution, in order to drive the output shaft, a motor, a first driving gear, a positioning pin, a double joint gear and a center pin are set. However, in order to improve the running stability of the center pin and the positioning pin, both ends of them need to be connected to the housing, which will cause the center pin to be relatively long and prone to bending, thus affecting the running smoothness of each gear. Summary of the Utility Model

[0005] In view of this, the utility model provides an electronic actuator, which can support a driving shaft and a transmission shaft to ensure the stable operation of transmission gears.

[0006] The technical solution of the utility model is realized as follows: The utility model provides an electronic actuator, which includes a housing, a rotating shaft, transmission gears and a transition plate. Among them,

[0007] The rotating shaft includes a driving shaft, a transmission shaft and an output shaft. The driving shaft, the transmission shaft and the output shaft are parallel and arranged at intervals, and are all rotatably arranged in the housing, and the output shaft penetrates through the housing;

[0008] The transmission gears are respectively fixedly arranged on the driving shaft, the transmission shaft and the output shaft, and the transmission gear on the driving shaft meshes with the transmission gear on the transmission shaft, and the transmission gear on the transmission shaft meshes with the transmission gear on the output shaft;

[0009] The transition plate is fixedly arranged in the housing and is rotatably connected to the driving shaft and the transmission shaft.

[0010] On the basis of the above technical solutions, preferably, it further includes a plurality of bearings, and the plurality of bearings are respectively arranged between the driving shaft and the housing, between the transmission shaft and the housing, between the output shaft and the housing, between the driving shaft and the transition plate, and between the transmission shaft and the transition plate.

[0011] More preferably, the bearing includes a ball bearing body and a seal, wherein,

[0012] The ball bearing body is sleeved outside the driving shaft, the transmission shaft or the output shaft;

[0013] The seal is sleeved outside the ball bearing body and abuts against the housing or the transition plate.

[0014] More preferably, the seal is a soft rubber sealing ring.

[0015] On the basis of the above technical solutions, preferably, it further includes a circuit board, and the circuit board is fixedly arranged in the housing;

[0016] The driving shaft includes a motor stator and a motor rotor, wherein,

[0017] The motor stator is fixedly arranged on the circuit board;

[0018] The motor rotor is located inside the motor stator and is rotatably arranged in the housing. The transmission gear on the driving shaft is fixedly arranged on the motor rotor, and the motor rotor is rotatably connected to the transition plate.

[0019] More preferably, both the motor rotor and the output shaft penetrate through the circuit board and are spaced apart from it;

[0020] The transmission gear and the transition plate are on the same side of the circuit board, and the motor stator is arranged on the side of the circuit board away from the transmission gear.

[0021] More preferably, it further includes an output gear, and the output gear is fixedly arranged on the output shaft, is located on the side of the circuit board away from the transmission gear, and the output gear penetrates through the housing.

[0022] More preferably, a receiving groove is formed on the outer side of the housing, a driving groove is formed on the side wall of the receiving groove, the driving groove is communicated with the inside of the housing, and a part of the output gear is located in the driving groove.

[0023] Based on the above technical solutions, preferably, the center lines of the drive shaft, the transmission shaft, and the output shaft are not in the same plane.

[0024] More preferably, two transmission gears are provided on the transmission shaft, the outer diameters of the two transmission gears on the transmission shaft are different, and they are respectively engaged with the transmission gear on the drive shaft and the transmission gear on the output shaft.

[0025] An electronic actuator of the present invention has the following beneficial effects compared with the prior art:

[0026] (1) By providing a transition plate and using its rotational connection with the drive shaft and the transmission shaft, the drive shaft and the transmission shaft can be supported, avoiding bending of the drive shaft and the transmission shaft during use, thereby making the operation of the transmission gear more stable;

[0027] (2) By providing a ball bearing body and a seal between the rotating shaft and the housing and between the rotating shaft and the transition plate, the gaps between the rotating shaft and the housing and between the rotating shaft and the transition plate can be compensated, thereby improving the connection stability between the rotating shaft and the housing and the transition plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is a cross-sectional view of an electronic actuator of the present invention;

[0030] Figure 2 It is a three-dimensional view of the transmission gear in an electronic actuator of the present invention;

[0031] Figure 3 It is a three-dimensional view of the bearing in an electronic actuator of the present invention;

[0032] Figure 4 It is a three-dimensional view of the motor stator in an electronic actuator of the present invention;

[0033] Figure 5 It is a three-dimensional view of the receiving groove in an electronic actuator of the present invention.

[0034] Wherein: 1. Housing; 101. Accommodating groove; 102. Driving groove; 103. Limiting groove; 2. Rotating shaft; 21. Driving shaft; 211. Motor stator; 212. Motor rotor; 22. Transmission shaft; 23. Output shaft; 3. Transmission gear; 4. Transition plate; 5. Bearing; 51. Ball bearing body; 52. Seal; 6. Circuit board; 7. Output gear. Detailed implementation manners

[0035] The technical solutions in the present utility model will be clearly and completely described below in conjunction with the specific implementation manners of the present utility model. Obviously, the described implementation manners are only a part of the implementation manners of the present utility model, rather than all of the implementation manners. All other implementation manners obtained by those of ordinary skill in the art based on the implementation manners in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] As Figures 1-5 shown, an electronic actuator of the present utility model includes a housing 1, a rotating shaft 2, a transmission gear 3, a transition plate 4, a bearing 5, a circuit board 6, and an output gear 7, and is an actuator for controlling an oil pump regulating mechanism according to an output signal of an electronic controller.

[0037] Among them, the housing 1 is used to carry and protect other components.

[0038] The rotating shaft 2 is used to cooperate with the transmission gear 3 to drive the output gear 7. The rotating shaft 2 includes a driving shaft 21, a transmission shaft 22, and an output shaft 23. The driving shaft 21, the transmission shaft 22, and the output shaft 23 are parallel and spaced apart, and are all rotatably arranged in the housing 1, and the output shaft 23 penetrates the housing 1; the driving shaft 21 is the output end of the motor or is coaxially fixedly connected to the output end of the motor.

[0039] The transmission gear 3 is used to cooperate with the rotating shaft 2 to drive the output gear 7. The transmission gears 3 are respectively fixedly arranged on the driving shaft 21, the transmission shaft 22, and the output shaft 23, and the transmission gear 3 on the driving shaft 21 meshes with the transmission gear 3 on the transmission shaft 22, and the transmission gear 3 on the transmission shaft 22 meshes with the transmission gear 3 on the output shaft 23; when the driving shaft 21 rotates, the engagement between the multiple transmission gears 3 can be used to drive the output shaft 23 to rotate, thereby driving the actuator.

[0040] The transition plate 4 is used to improve the stability of the driving shaft 21 and the transmission shaft 22. The transition plate 4 is fixedly arranged in the housing 1 and is rotatably connected to the driving shaft 21 and the transmission shaft 22. By supporting the driving shaft 21 and the transmission shaft 22 with the transition plate 4, bending of the two can be avoided, the center distance between the two can be ensured, and thus the running smoothness of the multiple transmission gears 3 can be ensured.

[0041] The transition plate 4 is preferably located at the middle position between the drive shaft 21 and the transmission shaft 22 and on one side of the transmission gear 3.

[0042] The bearing 5 is used to connect the rotating shaft 2 to the housing 1 or / and the rotating shaft 2 to the transition plate 4. A plurality of bearings 5 are provided. The plurality of bearings 5 are respectively arranged between the drive shaft 21 and the housing 1, between the transmission shaft 22 and the housing 1, between the output shaft 23 and the housing 1, between the drive shaft 21 and the transition plate 4, and between the transmission shaft 22 and the transition plate 4, so as to reduce the wear between the rotating shaft 2 and the housing 1 or / and the rotating shaft 2 and the transition plate 4.

[0043] As Figure 3 shown, the bearing 5 includes a ball bearing body 51 and a seal 52. The internal structure of the ball bearing body 51 is prior art, including an inner ring, an outer ring, and balls between the inner and outer rings. The ball bearing body 51 is sleeved on the outside of the drive shaft 21, the transmission shaft 22, or the output shaft 23. Specifically, the inner ring of the ball bearing body 51 is fixedly arranged on the outside of the drive shaft 21, the transmission shaft 22, or the output shaft 23; the seal 52 is sleeved on the outside of the ball bearing body 51. Specifically, the seal 52 is fixed on the outside of the outer ring of the ball bearing body 51, and the seal 52 abuts against the housing 1 or the transition plate 4. The seal 52 is made of rubber and has elasticity, which can compensate for the installation gap between the rotating shaft 2 and the housing 1 or the transition plate 4. Specifically, the seal 52 in this embodiment is a soft rubber sealing ring.

[0044] Specifically, the seal 52 in this embodiment is a soft sealing ring.

[0045] The circuit board 6 is used to supply power to the electrical components in the electronic actuator. The circuit board 6 is fixedly arranged in the housing 1; As Figure 4 shown, the drive shaft 21 includes a motor stator 211 and a motor rotor 212. The motor stator 211 is fixedly arranged on the circuit board 6; the motor rotor 212 is located inside the motor stator 211 and is rotatably arranged in the housing 1. The transmission gear 3 on the drive shaft 21 is fixedly arranged on the motor rotor 212, and the motor rotor 212 is rotatably connected to the transition plate 4; when direct current is applied to the motor stator 211, a magnetic field will be formed, thereby driving the motor rotor 212 to rotate, so as to drive the transmission gear 3 on the motor rotor 212 to rotate. The driving principle of the motor stator 211 and the motor rotor 212 is prior art.

[0046] As Figure 2 and Figure 4As shown, the motor rotor 212 and the output shaft 23 both penetrate through the circuit board 6 and are spaced apart from it, which can be achieved by opening perforations in the circuit board 6; the transmission gear 3 and the transition plate 4 are located on the same side of the circuit board 6, and the motor stator 211 is arranged on the side of the circuit board 6 away from the transmission gear 3. With this layout, the occupied space of each component in the housing 1 can be reduced, thereby improving the space utilization rate in the housing 1.

[0047] The output gear 7 is used to drive the actuator. The output gear 7 is fixedly arranged on the output shaft 23, is located on the side of the circuit board 6 away from the transmission gear 3, and the output gear 7 penetrates through the housing 1. When the output shaft 23 is driven to rotate by the drive shaft 21, the transmission shaft 22, and the transmission gear 3, the output gear 7 can be driven to rotate, thereby controlling the gear on the input shaft of the actuator.

[0048] As Figure 5 shown, a receiving groove 101 is formed on the outer side of the housing 1, a driving groove 102 is formed on the side wall of the receiving groove 101, the driving groove 102 communicates with the inside of the housing 1, and a part of the output gear 7 is located in the driving groove 102. The output gear 7 penetrates through the housing 1 through the driving groove 102 and the receiving groove 101; when this electronic actuator is assembled with the actuator on the adjustment mechanism, the input end of the actuator can be inserted into the receiving groove 101, thereby providing a certain degree of protection for the input end of the actuator.

[0049] To optimize the occupied space of each component in the housing 1, it is preferably that the center lines of the drive shaft 21, the transmission shaft 22, and the output shaft 23 are not in the same plane. That is, according to the space in the housing 1, the drive shaft 21, the transmission shaft 22, and the output shaft 23 can be arranged in a triangular shape to optimize the occupied space of the transmission gear 3.

[0050] As Figure 2 shown, two transmission gears 3 are arranged on the transmission shaft 22. The outer diameters of the two transmission gears 3 on the transmission shaft 22 are different and are respectively meshed with the transmission gear 3 on the drive shaft 21 and the transmission gear 3 on the output shaft 23. This structure can also reduce the occupied space of the transmission gear 3 and ensure the meshing stability of the transmission gear 3.

[0051] The working principle of an electronic actuator of the present utility model is as follows:

[0052] When direct current is applied to the motor stator 211, it can drive the motor rotor 212 to rotate. Cooperating with the meshing of multiple transmission gears 3, it drives the transmission shaft 22 and the output shaft 23 to rotate, thereby driving the output gear 7 to rotate to control the actuating device. During this period, by using the support of the transition plate 4 for the drive shaft 21 and the transmission shaft 22 and the clearance compensation of the bearing 5 between the rotating shaft 2 and the transition plate 4 and between the rotating shaft 2 and the housing 1, the running stability of the transmission gear 3 can be improved.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electronic actuator, characterized in that: It comprises a housing (1), a rotating shaft (2), a transmission gear (3) and a transition plate (4), wherein: The rotating shaft (2) comprises a driving shaft (21), a transmission shaft (22) and an output shaft (23); the driving shaft (21), the transmission shaft (22) and the output shaft (23) are arranged in parallel and at intervals, and are all rotatably arranged in the housing (1); and the output shaft (23) passes through the housing (1); The transmission gear (3) is respectively fixedly arranged on the driving shaft (21), the transmission shaft (22) and the output shaft (23), and the transmission gear (3) on the driving shaft (21) is meshed with the transmission gear (3) on the transmission shaft (22), and the transmission gear (3) on the transmission shaft (22) is meshed with the transmission gear (3) on the output shaft (23); The transition plate (4) is fixedly arranged in the housing (1) and is rotationally connected to the drive shaft (21) and the transmission shaft (22).

2. An electronic actuator as claimed in claim 1, characterized in that: The invention also comprises a plurality of bearings (5), wherein the plurality of bearings (5) are respectively arranged between the drive shaft (21) and the housing (1), between the transmission shaft (22) and the housing (1), between the output shaft (23) and the housing (1), between the drive shaft (21) and the transition plate (4), and between the transmission shaft (22) and the transition plate (4).

3. An electronic actuator as claimed in claim 2, characterized in that: The bearing (5) comprises a ball bearing body (51) and a sealing member (52), wherein: The ball bearing body (51) is sleeved on the outside of the drive shaft (21), the transmission shaft (22) or the output shaft (23); The sealing member (52) is sleeved on the outer side of the ball bearing body (51) and abuts against the housing (1) or the transition plate (4).

4. An electronic actuator as claimed in claim 3, characterized in that: The sealing element (52) is a soft rubber sealing ring.

5. An electronic actuator as claimed in claim 1, characterized in that: It also includes a circuit board (6), wherein the circuit board (6) is fixedly arranged in the housing (1); The driving shaft (21) comprises a motor stator (211) and a motor rotor (212), wherein: The motor stator (211) is fixedly arranged on the circuit board (6); The motor rotor (212) is located inside the motor stator (211) and is rotatably disposed inside the housing (1); the transmission gear (3) on the drive shaft (21) is fixedly disposed on the motor rotor (212), and the motor rotor (212) is rotatably connected to the transition plate (4).

6. An electronic actuator as claimed in claim 5, characterized in that: The motor rotor (212) and the output shaft (23) both penetrate the circuit board (6) and are spaced apart therefrom; The transmission gear (3) and the transition plate (4) are located on the same side of the circuit board (6), and the motor stator (211) is arranged on a side of the circuit board (6) away from the transmission gear (3).

7. An electronic actuator as claimed in claim 6, characterized in that: It also includes an output gear (7), which is fixedly arranged on the output shaft (23) and located on a side of the circuit board (6) away from the transmission gear (3), and the output gear (7) passes through the housing (1).

8. An electronic actuator as claimed in claim 7, characterized in that: The outer side of the housing (1) is provided with a receiving groove (101), the side wall of the receiving groove (101) is provided with a driving groove (102), the driving groove (102) is connected to the inside of the housing (1), and a part of the output gear (7) is located in the driving groove (102).

9. An electronic actuator as claimed in claim 1, characterized in that: The center line of the drive shaft (21), the center line of the transmission shaft (22) and the center line of the output shaft (23) are not located in the same plane.

10. An electronic actuator as claimed in claim 9, characterized in that: The transmission shaft (22) is provided with two transmission gears (3); the two transmission gears (3) on the transmission shaft (22) have different outer diameters and are respectively meshed with the transmission gear (3) on the drive shaft (21) and the transmission gear (3) on the output shaft (23).

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